Optics: measuring and testing – By polarized light examination – With birefringent element
Patent
1996-04-25
1997-11-04
Font, Frank G.
Optics: measuring and testing
By polarized light examination
With birefringent element
356345, 356400, G01B 902
Patent
active
056845936
ABSTRACT:
A reference reflector alignment aid (26) is provided including an alignment indicator (28). The alignment aid (26) is secured to a reference reflector (30) such that the alignment indicator (28) is located essentially at the optical center of curvature (32) of the reference reflector (30). The alignment aid (26) and reference reflector (30) are movable as a unit to position the optical center of curvature (32) coincident to the focal point (24) of an element or optical system to be tested (20).
REFERENCES:
patent: 4085329 (1978-04-01), McCoy et al.
patent: 5467193 (1995-11-01), Laewen et al.
patent: 5563706 (1996-10-01), Shibuya et al.
Denson-Low Wanda K.
Font Frank G.
Hughes Electronics
Kim Robert
Lindeen III Gordon R.
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